polls now show president obama's lead in ohio narrowed to just over one point on average. but the president has a big advantage, 18 points, among early voters. and the latest washington post/abc poll has the president up by three percentage points, virtually unchanged since the last debate. tracie potts, nbc news, washington. >>> politicians from both sides of the aisle are paying tribute to former pennsylvania senator arlen specter. specter died yesterday after losing his battle with non-hodgkin's lymphoma. he was first elected to the senate in 1980. a long-time moderate republican, he made the headlines in 2009 when he announced he was switching to the democratic party. specter lost the democratic primary in 2010. during his tenure on capitol hill, he was the chairman of the senate judiciary committee and played a key role in many supreme court nominations. he was 82 years old. funeral arrangements have not been announced. >>> it's 4:51. the journey is finally complete. after three days and a few snags, "endeavour" has made it home. when you can see it on display next. >